Annual mean 5°C · wettest around June · prevailing wind SW
Warmest
23.6 °C
Coldest
-7.6 °C
Wettest
24%
Windiest
5.1 m/s
Prevailing
SW
4.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Calgary over the whole year is 5°C. July is the hottest month, with highs of about 22°C; February is the coldest, with lows of about -10°C. Calgary has no sharply defined rainy season: the chance of rain on a given day runs from 15% in January, the driest month, to 22% in June, the wettest. Winds in Calgary are highest in June, averaging 4.0 m/s (14 km/h), and lightest in August, at 3.2 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Calgary come in August, when the sky is typically 39% covered; April is the cloudiest month, at 48%.
Month by month Calgary climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-3°C
-8°C
-9°C
15%
46%
3.5 m/s
0
0
2
February
-5°C
-10°C
-11°C
19%
47%
3.6 m/s
0
0
3
March
2°C
-6°C
-5°C
17%
46%
3.5 m/s
0
0
10
April
8°C
0°C
2°C
18%
48%
3.8 m/s
3
0
32
May
15°C
7°C
10°C
21%
48%
3.9 m/s
31
1
64
June
19°C
10°C
15°C
22%
44%
4.0 m/s
53
5
76
July
22°C
13°C
19°C
21%
39%
3.3 m/s
77
19
69
August
22°C
13°C
19°C
18%
39%
3.2 m/s
75
16
71
September
17°C
8°C
12°C
18%
42%
3.2 m/s
40
5
71
October
9°C
1°C
4°C
17%
42%
3.5 m/s
11
0
39
November
2°C
-3°C
-3°C
17%
46%
3.7 m/s
1
0
12
December
-4°C
-8°C
-9°C
18%
44%
3.5 m/s
0
0
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Calgary weather by season
Year round, Calgary has days of about -5°C at their warmest in February, its coolest month, and 22°C in July, its warmest; the coolest hours of the day run from -10°C to 13°C through the year, and the average temperature over the year is 5°C around the clock. Rain is most likely around June and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Calgary weather in winterDecember to February
High -4°CLow -9°CRain 17%
Winter in Calgary has typical daily highs of about -4°C and lows of about -9°C, with a 17% chance of rain on a given day.
Calgary weather in springMarch to May
High 8°CLow 0°CRain 18%
Spring in Calgary has typical daily highs of about 8°C and lows of about 0°C, with a 18% chance of rain on a given day.
Calgary weather in summerJune to August
High 21°CLow 12°CRain 20%
Summer in Calgary has typical daily highs of about 21°C and lows of about 12°C, with a 20% chance of rain on a given day.
Calgary weather in autumnSeptember to November
High 9°CLow 2°CRain 17%
Autumn in Calgary has typical daily highs of about 9°C and lows of about 2°C, with a 17% chance of rain on a given day.
When is the rainy season in Calgary?
Calgary has no sharply defined rainy season: the chance of rain on a given day runs from 15% in January, the driest month, to 22% in June, the wettest.
What time of year is Calgary windiest?
Winds in Calgary are highest in June, averaging 4.0 m/s (14 km/h), and lightest in August, at 3.2 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Calgary year round?
The average temperature in Calgary over the whole year is 5°C. July is the hottest month, with highs of about 22°C; February is the coldest, with lows of about -10°C.